Balloon holder



FIG. 1 is a perspective view of a balloon holder showing the new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof, a left side view being a mirror image thereof; and,

FIG. 6 is a bottom view thereof.

The portions of the balloon holder in FIGS. 3, 4, 5, and 6 shown in broken lines are included to show features that form no part of the claimed design. 

CLAIM The ornamental design for a balloon holder, as shown and described. 